Hi sylvain: It is really odd... I enable display lwip stats, it shows that there is packet dropped..
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Sylvain Rochet Sent: 2012年5月17日 17:50 To: Mailing list for lwIP users Subject: Re: [lwip-users] lwip whole performance down Salut Vincent, On Thu, May 17, 2012 at 12:35:10AM +0000, vincent cui wrote: > > [...] > I found that it takes a 1 or 2 seconds to open connect successfully . > [...] It looks like a not acknowledged SYN packet, which might be dropped somewhere from your PHY to lwIP TCP and which is then sent again by your TCP client, use Wireshark and check the TCP flow ! :-) Sylvain _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
